IInputMethodSessionWrapper.java revision 758143ecfedbe08cc6c4fed0ad8ad7a854194ca4 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.inputmethodservice;
18
19import com.android.internal.os.HandlerCaller;
20import com.android.internal.os.SomeArgs;
21import com.android.internal.view.IInputMethodCallback;
22import com.android.internal.view.IInputMethodSession;
23
24import android.content.Context;
25import android.graphics.Rect;
26import android.os.Bundle;
27import android.os.Message;
28import android.os.RemoteException;
29import android.util.Log;
30import android.view.KeyEvent;
31import android.view.MotionEvent;
32import android.view.inputmethod.CompletionInfo;
33import android.view.inputmethod.ExtractedText;
34import android.view.inputmethod.InputMethodSession;
35
36class IInputMethodSessionWrapper extends IInputMethodSession.Stub
37        implements HandlerCaller.Callback {
38    private static final String TAG = "InputMethodWrapper";
39    private static final boolean DEBUG = false;
40
41    private static final int DO_FINISH_INPUT = 60;
42    private static final int DO_DISPLAY_COMPLETIONS = 65;
43    private static final int DO_UPDATE_EXTRACTED_TEXT = 67;
44    private static final int DO_DISPATCH_KEY_EVENT = 70;
45    private static final int DO_DISPATCH_TRACKBALL_EVENT = 80;
46    private static final int DO_UPDATE_SELECTION = 90;
47    private static final int DO_UPDATE_CURSOR = 95;
48    private static final int DO_APP_PRIVATE_COMMAND = 100;
49    private static final int DO_TOGGLE_SOFT_INPUT = 105;
50    private static final int DO_FINISH_SESSION = 110;
51    private static final int DO_VIEW_CLICKED = 115;
52
53    HandlerCaller mCaller;
54    InputMethodSession mInputMethodSession;
55
56    // NOTE: we should have a cache of these.
57    static class InputMethodEventCallbackWrapper implements InputMethodSession.EventCallback {
58        final IInputMethodCallback mCb;
59        InputMethodEventCallbackWrapper(IInputMethodCallback cb) {
60            mCb = cb;
61        }
62        public void finishedEvent(int seq, boolean handled) {
63            try {
64                mCb.finishedEvent(seq, handled);
65            } catch (RemoteException e) {
66            }
67        }
68    }
69
70    public IInputMethodSessionWrapper(Context context,
71            InputMethodSession inputMethodSession) {
72        mCaller = new HandlerCaller(context, this);
73        mInputMethodSession = inputMethodSession;
74    }
75
76    public InputMethodSession getInternalInputMethodSession() {
77        return mInputMethodSession;
78    }
79
80    public void executeMessage(Message msg) {
81        if (mInputMethodSession == null) return;
82
83        switch (msg.what) {
84            case DO_FINISH_INPUT:
85                mInputMethodSession.finishInput();
86                return;
87            case DO_DISPLAY_COMPLETIONS:
88                mInputMethodSession.displayCompletions((CompletionInfo[])msg.obj);
89                return;
90            case DO_UPDATE_EXTRACTED_TEXT:
91                mInputMethodSession.updateExtractedText(msg.arg1,
92                        (ExtractedText)msg.obj);
93                return;
94            case DO_DISPATCH_KEY_EVENT: {
95                SomeArgs args = (SomeArgs)msg.obj;
96                mInputMethodSession.dispatchKeyEvent(msg.arg1,
97                        (KeyEvent)args.arg1,
98                        new InputMethodEventCallbackWrapper(
99                                (IInputMethodCallback)args.arg2));
100                args.recycle();
101                return;
102            }
103            case DO_DISPATCH_TRACKBALL_EVENT: {
104                SomeArgs args = (SomeArgs)msg.obj;
105                mInputMethodSession.dispatchTrackballEvent(msg.arg1,
106                        (MotionEvent)args.arg1,
107                        new InputMethodEventCallbackWrapper(
108                                (IInputMethodCallback)args.arg2));
109                args.recycle();
110                return;
111            }
112            case DO_UPDATE_SELECTION: {
113                SomeArgs args = (SomeArgs)msg.obj;
114                mInputMethodSession.updateSelection(args.argi1, args.argi2,
115                        args.argi3, args.argi4, args.argi5, args.argi6);
116                args.recycle();
117                return;
118            }
119            case DO_UPDATE_CURSOR: {
120                mInputMethodSession.updateCursor((Rect)msg.obj);
121                return;
122            }
123            case DO_APP_PRIVATE_COMMAND: {
124                SomeArgs args = (SomeArgs)msg.obj;
125                mInputMethodSession.appPrivateCommand((String)args.arg1,
126                        (Bundle)args.arg2);
127                args.recycle();
128                return;
129            }
130            case DO_TOGGLE_SOFT_INPUT: {
131                mInputMethodSession.toggleSoftInput(msg.arg1, msg.arg2);
132                return;
133            }
134            case DO_FINISH_SESSION: {
135                mInputMethodSession = null;
136                return;
137            }
138            case DO_VIEW_CLICKED: {
139                mInputMethodSession.viewClicked(msg.arg1 == 1);
140                return;
141            }
142        }
143        Log.w(TAG, "Unhandled message code: " + msg.what);
144    }
145
146    public void finishInput() {
147        mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_FINISH_INPUT));
148    }
149
150    public void displayCompletions(CompletionInfo[] completions) {
151        mCaller.executeOrSendMessage(mCaller.obtainMessageO(
152                DO_DISPLAY_COMPLETIONS, completions));
153    }
154
155    public void updateExtractedText(int token, ExtractedText text) {
156        mCaller.executeOrSendMessage(mCaller.obtainMessageIO(
157                DO_UPDATE_EXTRACTED_TEXT, token, text));
158    }
159
160    public void dispatchKeyEvent(int seq, KeyEvent event, IInputMethodCallback callback) {
161        mCaller.executeOrSendMessage(mCaller.obtainMessageIOO(DO_DISPATCH_KEY_EVENT, seq,
162                event, callback));
163    }
164
165    public void dispatchTrackballEvent(int seq, MotionEvent event, IInputMethodCallback callback) {
166        mCaller.executeOrSendMessage(mCaller.obtainMessageIOO(DO_DISPATCH_TRACKBALL_EVENT, seq,
167                event, callback));
168    }
169
170    public void updateSelection(int oldSelStart, int oldSelEnd,
171            int newSelStart, int newSelEnd, int candidatesStart, int candidatesEnd) {
172        mCaller.executeOrSendMessage(mCaller.obtainMessageIIIIII(DO_UPDATE_SELECTION,
173                oldSelStart, oldSelEnd, newSelStart, newSelEnd,
174                candidatesStart, candidatesEnd));
175    }
176
177    public void viewClicked(boolean focusChanged) {
178        mCaller.executeOrSendMessage(mCaller.obtainMessageI(DO_VIEW_CLICKED, focusChanged ? 1 : 0));
179    }
180
181    public void updateCursor(Rect newCursor) {
182        mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_UPDATE_CURSOR,
183                newCursor));
184    }
185
186    public void appPrivateCommand(String action, Bundle data) {
187        mCaller.executeOrSendMessage(mCaller.obtainMessageOO(DO_APP_PRIVATE_COMMAND, action, data));
188    }
189
190    public void toggleSoftInput(int showFlags, int hideFlags) {
191        mCaller.executeOrSendMessage(mCaller.obtainMessageII(DO_TOGGLE_SOFT_INPUT, showFlags, hideFlags));
192    }
193
194    public void finishSession() {
195        mCaller.executeOrSendMessage(mCaller.obtainMessage(DO_FINISH_SESSION));
196    }
197}
198